Analysis and implementation of channel estimation in OFDM system using pilot symbols

The demand for high speed, reliable communication using available frequency spectrum results in a new technology called OFDM. Channel estimation has a vital role in finding the effect of the channel on OFDM signal. In this work, performance analysis and implementation of pilot aided channel estimation is investigated. Different channel estimation methods like Least Square, Minimum mean Square Error estimator, modified MMSE and LS methods are discussed in the proposed work. This paper concentrates on performance comparison of channel estimation in terms of Symbol error rate and Mean square error.